Demisting and defrosting structure of car lamp

Abstract

The invention relates to a demisting and defrosting structure for a vehicle lamp, which comprises a lamp body, an outer lampshade, a light-emitting component, a first filter and a second filter, and is characterized in that the transparent or semitransparent outer lampshade covers the light-emitting component on the outer side and is fixedly mounted on the lamp body; the first filter and the second filter are directly formed on the inner side and the outer side of the outer lampshade in an embedded injection molding mode, the first filter absorbs light of the light-emitting assembly on the inner side and converts the light into heat energy to disperse fog, and the second filter absorbs light of the light-emitting assembly on the outer side and converts the light into heat energy to eliminate a frost layer. According to the demisting and defrosting structure for the vehicle lamp, the material attributes of the two sides of the outer lampshade are changed through the first filter and the second filter, the specific light is absorbed, the heating effect is achieved, and the good demisting and defrosting effect is ensured while the safety risk is eliminated.

Description

Technical Field

[0001] The invention relates to a vehicle, and more particularly to a vehicle lamp defogger and defroster structure. Background Art

[0002] It is known that car lights will basically have the problem of fogging and frosting, which will have a great impact on driving safety and appearance. However, since liquid film condensation is a common physical phenomenon, it is difficult to avoid it at the source, so various methods can only be used to speed up the dissipation of fog and frost.

[0003] Known means to solve the fogging and frosting problems include heating, desiccants, waterproof breathable membranes, anti-fog coatings, etc. However, these known solutions require a lot of space and will add a variety of additional structures and components. Among them, heating, which has the best effect, has a greater process risk, while other means have limited effect on solving the problem. For heating means, it usually involves arranging a heating wire or a heating film inside the headlight, and energizing the heating wire or the heating film to increase the temperature inside the headlight to promote the dissipation of fog and frost. Obviously, this power-on operation has a greater process risk. Summary of the invention

[0004] In order to solve the problems of poor defrosting effect or risks in the above-mentioned prior art, the present invention provides a defrosting and defrosting structure for a vehicle lamp.

[0005] According to the vehicle lamp defogger and defrost structure of the present invention, it includes a lamp body, an outer lamp cover, a light-emitting component, a first filter and a second filter, wherein the transparent or translucent outer lamp cover covers the light-emitting component on the outside and is fixedly mounted on the lamp body, the first filter and the second filter are directly molded on the inner and outer opposite sides of the outer lamp cover by embedded injection molding, the first filter absorbs the light of the light-emitting component on the inside and converts it into heat energy to dispel fog, and the second filter absorbs the light of the light-emitting component on the outside and converts it into heat energy to eliminate frost.

[0006] In a preferred embodiment, the thickness of the first filter and the second filter are respectively between a few micrometers and 2 millimeters.

[0007] In a preferred embodiment, the first filter and the second filter are optical filters for selectively transmitting or blocking light wavelengths, selectively transmitting visible light bands and absorbing invisible light bands.

[0008] In a preferred embodiment, the first filter and the second filter are infrared and / or ultraviolet absorption filters respectively.

[0009] In a preferred embodiment, the lighting assembly includes a circuit board and a first light source, wherein the circuit board is fixedly mounted on the lamp body and connected to the vehicle body electrical connector, and the first light source is electrically connected to the circuit board to provide normal lighting function.

[0010] In a preferred embodiment, the lighting assembly further includes a second light source electrically connected to the circuit board to provide additional energy.

[0011] In a preferred embodiment, the vehicle lamp defogger and defrost structure further includes a bracket fixedly mounted on the lamp body, which has a reflective surface, and the light emitted by the second light source is irradiated to the first filter and the second filter through the reflective surface.

[0012] In a preferred embodiment, the second light source is an infrared and / or ultraviolet emitter.

[0013] In a preferred embodiment, the light emitting assembly further comprises a reflector, which is fixedly mounted on the lamp body and disposed between the first light source and the outer lampshade to reflect the light emitted by the first light source to improve the lighting efficiency and beam quality of the vehicle body.

[0014] In a preferred embodiment, the light emitting assembly further comprises a light homogenizing plate, which is fixedly mounted on the lamp body and disposed between the reflector and the outer lampshade to make the light distribution more uniform.

[0015] According to the vehicle lamp defogger and defrost structure of the present invention, the material properties of both sides of the outer lamp cover are changed by the first filter and the second filter to achieve absorption of specific light and heating effect, thereby ensuring good defogger and defrost effects while eliminating safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1-Figure 2 It is a structural schematic diagram of a vehicle lamp defogger and defroster structure according to a preferred embodiment of the present invention.

[0017] Figure 3 FIG. 4 is a cross-sectional view of a vehicle lamp defogger and defroster structure according to another preferred embodiment of the present invention.

[0018] Figure 4 4 is a cross-sectional view of a vehicle lamp defogger and defroster structure according to another preferred embodiment of the present invention. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings and described in detail.

[0020] like Figure 1-Figure 2As shown, a vehicle lamp defogger and defrost structure according to a preferred embodiment of the present invention comprises a lamp body 1, an outer lampshade 2, a light-emitting component (not shown), a first filter 3 and a second filter 4, wherein the lamp body 1 is mounted on a mounting interface reserved for the vehicle through a first fastener, the light-emitting component is fixedly mounted on the lamp body 1 and connected to the vehicle body electrical connector, the transparent or translucent outer lampshade 2 covers the light-emitting component on the outside and is mounted on the lamp body 1 through a second fastener, the first filter 3 and the second filter 4 are directly molded on the inner and outer opposite sides of the outer lampshade 2 through embedded injection molding, the first filter 3 absorbs the light of the light-emitting component on the inside and converts it into heat energy to dissipate the fog, and the second filter 4 absorbs the light of the light-emitting component on the outside and converts it into heat energy to eliminate the frost layer. Specifically, when the outer lampshade 2 is injection molded, the first filter 3 and the second filter 4 are pre-placed in the mold as inserts, so that when the injection molding is completed, the first filter 3 and the second filter 4 are directly fixed on the outer lampshade 2, and no additional glue or the like is required for pasting. Compared with the existing technology of energizing the heating wire or heating film on the surface of the car lamp, the car lamp defogger and defrost structure according to the present invention does not require additional power supply. It only changes the material properties of both sides of the outer lamp cover 2 through the first filter 3 and the second filter 4 to achieve the absorption of specific light and the heating effect, thereby eliminating safety risks and ensuring good defogger and defrost effects.

[0021] The thickness of the first filter 3 and the second filter 4 can be adjusted from a few microns to 2 mm, depending on the specific project conditions. Fixing them on the outer lampshade 2 does not affect the basic appearance and function of the lamp.

[0022] The first filter 3 and the second filter 4 are optical filters for selectively transmitting or blocking light wavelengths, selectively transmitting visible light bands and absorbing invisible light bands. For example, a substance that absorbs infrared light is added during the manufacturing process of the filter, thereby allowing visible light to pass through while absorbing invisible infrared light, thereby providing an infrared absorption filter. For another example, a substance that absorbs ultraviolet light is added during the manufacturing process of the filter, thereby allowing visible light to pass through while absorbing invisible ultraviolet light, thereby providing an ultraviolet absorption filter.

[0023] When the light source (such as LED) of the light-emitting component is turned on, the visible light emitted by the first light source can pass through the first filter 3 and the second filter 4 to realize the normal light-emitting function, and the invisible band energy emitted by the light source is absorbed by the first filter 3 and the second filter 4, so that the temperature of the first filter 3 and the second filter 4 rises, thereby heating the outer lampshade 2 without affecting the appearance and function of the lamp, thereby realizing the defogger and defrost function.

[0024] like Figure 3As shown, the light-emitting assembly of the lamp defogger and defroster structure according to another preferred embodiment of the present invention is the same as the previous embodiment, including a circuit board 51, a first light source 52, a reflector 53 and a light homogenizer 54, wherein the circuit board 51 is fixedly mounted on the lamp body 1 and connected to the electrical connector of the vehicle body, the first light source 52 is electrically connected to the circuit board 51 to provide a normal lighting function, the reflector 53 is fixedly mounted on the lamp body 1 and arranged between the first light source 52 and the outer lampshade 2 to reflect the light emitted by the first light source 52 to improve the lighting efficiency and beam quality of the vehicle body, and the light homogenizer 54 is fixedly mounted on the lamp body 1 and arranged between the reflector 53 and the outer lampshade 2 to make the light distribution more uniform and reduce light spots and shadows. Different from the previous embodiment, the light-emitting assembly of this embodiment also includes a second light source 6, which is electrically connected to the circuit board 51 to provide additional energy. For example, when the first filter 3 and the second filter 4 are infrared absorption filters, the second light source 6 is an infrared emitter. For another example, when the first filter 3 and the second filter 4 are ultraviolet absorption filters, the second light source 6 is an ultraviolet emitter. It should be understood that the number and position of the second light sources 6 can be adjusted as needed, and can be a combination of one or even dozens, for example, directly installed on the circuit board 51 using a semiconductor patch process, consistent with the installation and positioning method of the first light source 52 that provides normal lighting function.

[0025] When the first light source 52 (such as LED) of the light-emitting assembly is lit, the visible light emitted by the first light source 52 can pass through the first filter 3 and the second filter 4 to realize the normal light-emitting function, and the invisible band energy emitted by the first light source 52 and the second light source 6 (such as infrared LED or ultraviolet LED) is absorbed by the first filter 3 and the second filter 4, so that the temperature of the first filter 3 and the second filter 4 rises, thereby heating the outer lampshade 2 without affecting the appearance and function of the lamp, and realizing the defogger and defrost function. Obviously, this embodiment is particularly suitable for the situation when the energy of the original first light source 52 is not enough to eliminate the fog and frost layer. The first filter 3 and the second filter 4 provide better defogger and defrost functions by absorbing the energy of the infrared emitter or the ultraviolet emitter.

[0026] like Figure 4 As shown, the vehicle lamp defogger and defrost structure according to another preferred embodiment of the present invention further includes a bracket 7 fixedly mounted on the lamp body 1, which has a reflective surface 71, and the light emitted by the second light source 6 is irradiated to the first filter 3 and the second filter 4 through the reflective surface 71. It should be understood that the number and position of the reflective surfaces 71 can be adjusted as needed, and the reflective surface 71 can be formed by using an aluminum plating process on the surface of the bracket 7 to form a mirror effect to guide the light to irradiate the first filter 3 and the second filter 4 blocked by the internal structure.

[0027] When the first light source 52 (such as LED) of the light-emitting assembly is lit, the visible light emitted by the first light source 52 can pass through the first filter 3 and the second filter 4 to realize the normal light-emitting function, and the invisible light emitted by the first light source 52 and the second light source 6 (such as infrared LED or ultraviolet LED) reaches the first filter 3 and the second filter 4 after being reflected by the reflective surface 71, so that the temperature of the first filter 3 and the second filter 4 rises, thereby heating the outer lampshade 2 without affecting the appearance and function of the lamp, and realizing the defogger and defrost function. Obviously, this embodiment is particularly suitable for the case where the energy of the original first light source 52 is insufficient to eliminate the fog and frost layer, and the first filter 3 and the second filter 4 are arranged in the area blocked by the internal structure of the lamp body. The first filter 3 and the second filter 4 provide better defogger and defrost functions by absorbing the energy of the infrared emitter or the ultraviolet emitter reflected by the reflective surface 71.

[0028] It should be understood that the defogger and defrost structure of the headlights according to the present invention may include headlights and grilles and any other parts that need to have a luminous effect, such as decorative strip lights, interior atmosphere lights, side doors, taillights, etc. The definition of luminescence not only includes visible light to the human eye, but also includes the emission of invisible light to the human eye. Sometimes, if there is a need for defrosting and defoggering, non-luminous grilles and other headlights can also adopt this structure (at this time, if there is no additional heat / light source, the heat generated by sunlight irradiating the film can be relied on to eliminate the fog). The present invention mainly adheres the film (i.e., the filter) to the outer lampshade, not limited to the inner wall or the outer wall, and the film can be arranged on any part that is prone to fogging and frosting. The film material of the present invention is mainly any material that can absorb ultraviolet or infrared energy, or a material that can absorb both at the same time. The visible luminous surface of the present invention can be any curved surface, plane, etc. The light source of the present invention can be an LED particle, or it can be any light source. In addition, when it is necessary to adjust the angle of the light source to irradiate the film, the reflective surface established is any curved surface, plane, etc.

[0029] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiment of the present invention can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the description of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A vehicle lamp defogger and defroster structure, characterized in that: The vehicle lamp defogger and defrost structure comprises a lamp body, an outer lampshade, a light-emitting component, a first filter and a second filter, wherein the transparent or translucent outer lampshade covers the light-emitting component on the outside and is fixedly mounted on the lamp body, the first filter and the second filter are directly formed on the inner and outer opposite sides of the outer lampshade by embedded injection molding, the first filter absorbs the light of the light-emitting component on the inside and converts it into heat energy to dispel fog, and the second filter absorbs the light of the light-emitting component on the outside and converts it into heat energy to eliminate frost.

2. The vehicle lamp defogger and defrost structure according to claim 1, characterized in that: The thickness of the first filter and the second filter are respectively between a few micrometers and 2 millimeters.

3. The vehicle lamp defogger and defrost structure according to claim 1, characterized in that: The first filter and the second filter are optical filters for selectively transmitting or blocking light wavelengths, selectively transmitting the visible light band and absorbing the invisible light band.

4. The vehicle lamp defogger and defrost structure according to claim 1, characterized in that: The first filter and the second filter are infrared and / or ultraviolet absorption filters respectively.

5. The vehicle lamp defogger and defrost structure according to claim 1, characterized in that: The light-emitting assembly includes a circuit board and a first light source, wherein the circuit board is fixedly mounted on the lamp body and connected to the vehicle body electrical connector, and the first light source is electrically connected to the circuit board to provide a normal lighting function.

6. The vehicle lamp defogger and defrost structure according to claim 5, characterized in that: The lighting assembly further includes a second light source electrically connected to the circuit board to provide additional energy.

7. The vehicle lamp defogger and defrost structure according to claim 6, characterized in that: The vehicle lamp defogger and defrost structure also includes a bracket fixedly mounted on the lamp body, which has a reflecting surface. The light emitted by the second light source is irradiated to the first filter and the second filter through the reflecting surface.

8. The vehicle lamp defogger and defrost structure according to claim 6, characterized in that: The second light source is an infrared and / or ultraviolet emitter.

9. The vehicle lamp defogger and defrost structure according to claim 5, characterized in that: The light emitting assembly also includes a reflector, which is fixedly mounted on the lamp body and arranged between the first light source and the outer lamp cover to reflect the light emitted by the first light source to improve the lighting efficiency and light beam quality of the vehicle body.

10. The vehicle lamp defogger and defrost structure according to claim 9, characterized in that: The light emitting assembly also includes a light homogenizing plate, which is fixedly mounted on the lamp body and arranged between the reflector and the outer lampshade to make the light distribution more uniform.

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